#liangdian-section img {
    width: 100%;
    max-width: 1280px;
}

#liangdian-section h3 {
    text-align: center;
    line-height: 40px;
    padding-top: 20px;
    padding-bottom: 20px;
}

@media screen and (max-width: 420px) {
    #liangdian-section h3 {
        line-height: 30px;
        font-size: 14px;
        padding-top: 16px;
        padding-bottom: 20px;
    }
}